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Standard Test Method for Determining Specific Heat Capacity by Differential Scanning Calorimetry
Specific Heat Capacity refers to the amount of heat (thermal energy) needed to increase the temperature of a
known mass of a substance by one temperature unit. Example: It takes roughly 4186 joules of thermal energy to
increase the temperature of 1 kg of water by 1 °K (equivalent to 1 °C).
A polymer or plastic material with a high specific heat capacity will offer better protection against sudden
changes in its thermal surroundings than a material with a lower specific heat capacity.
You can find information Differential Scanning Calorimetry on this page.
Possible reasons why a company might test for specific heat capacity include:
- Assist With a Materials Selection Process
Below you will find a brief description of the ASTM Test Method related to the topics covered above:
Significance and Use
Differential scanning calorimetric measurements provide a rapid, simple method for determining specific heat capacities of materials.
Specific heat capacities are important for reactor and cooling system design purposes, quality control, and research and development.
1. Scope
1.1 This test method covers the determination of specific heat capacity by differential scanning calorimetry.
1.2 This test method is generally applicable to thermally stable solids and liquids.
1.3 The normal operating range of the test is from 100 to 600C. The temperature range can be extended, depending upon the instrumentation and specimen holders used.
1.4 The values stated in SI units are to be regarded as the standard.
1.5 Computer or electronic-based instrumentation, techniques, or data treatment equivalent to this test method may be used.
Note 1 -- Users of this test method are expressly advised that all such instruments or techniques may not be equivalent. It is the responsibility of the user of this test method to determine equivalency prior to use.
1.6 This method is similar to ISO 11357-4, but contains additional methodology not found in that method. Additionally, ISO 11357-4 contains practices not found in this standard. This method is similar to Japanese Industrial Standard K 7123, but contains additional methodology not found in that method.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in Section.
2. Referenced Documents
ASTM Standards
- E1142 Terminology Relating to Thermophysical Properties
- E473 Terminology Relating to Thermal Analysis
- E967 Practice for Temperature Calibration of Differential Scanning Calorimeters and Differential Thermal Analyzers
- E968 Practice for Heat Flow Calibration of Differential Scanning Calorimeters and Differential Thermal Analyzers
ISO Standard
- ISO11357–4 Plastics- Differential Scanning Calorimetry (DSC)- Determination of Specific Heat Capacity
Japanese Industrial Standard
- K7123 Testing Methods for Specific Heat Capacity of Plastics
Index Terms
specific heat capacity; differential scanning calorimetry; ICS Number Code 17.200.10 (Heat. Calorimetry)
DOI:
10.1520/E1269-05
( Download ASTM E1269 From www.ASTM.org )
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